归属需要

结果指出，高合作需求动机的学生在个别学习的情境下，显著地低于其他各组的学习成效。

Maslows need hierarchy theory

Revision of amputated stump (need osteoplasty)--thigh, leg, arm, forearm

help in sb's hour of need

external need

psychological need

hierarchy of need【劳经】

dependency need

need